E20-335 Symmetrix Solutions Specialist Study Guide For Implementation Engineers Old

Front 1

How many mirror positions does a RAID 1 protected volume occupy in a Symmetrix running Enginuity 5874?

Back 1

1

Front 2

A TimeFinder/Snap virtual device will be used as the control device in an Open Replicator Cold Push implementation. What is the maximum number of concurrent remote devices supported?

Back 2

1
8

16

Front 3

7 What is the maximum number of hypervolumes permitted on a disk at Enginuity 5874?

Back 3

512

Front 4

What is a reason to pre-allocate space when binding thin devices?

Back 4

To improve performance in thin hostile environments

Front 5

Which configuration is necessary for a host to use Enginuity Consistency Assist (ECA) to perform TimeFinder/Snap consistent activation?

Back 5

A dedicated channel to the gatekeeper devices
PowerPath must be invoked with the -cg option
PowerPath must be installed on the host

Front 6

In a single-hop SRDF/AR setup the options have been set as follows:

Cycle Time=300
Delay Time=400
Overflow=Immediate

The symreplicate session was started at time 0. The actual cycle time was 200 seconds. How many seconds after the start of the first cycle will the next cycle start?

Back 6

600

Front 7

What is a recommended action before performing an SRDF Failback operation?

Back 7

Stop accessing the R2 volume

Front 8

What is the maximum number of SAVE pools that can exist in the Symmetrix V-Max array?

Back 8

512

Front 9

Open Replicator will be used to create a point-in-time copy of an application at 10:00 P.M. every night. The application runs continuously (24x7) and the data is on a Symmetrix V-Max array. The incremental copy should take less than one hour. The impact of the Open Replicator copy session to the application should be minimized.

How should this replication solution be implemented?

Back 9

Use Cold Push. Create the session with the Precopy option at 9 P.M. and activate at 10 P.M.
Use Hot Push. Create the session with the Precopy option at 9 P.M. and activate at 10 P.M.

Use Cold Push. Create and activate the session with the Copy on Write option at 10 P.M.

Front 10

Using SYMAPI_RCOPY_SESSION_LIMIT on an array that is running Enginuity 5874, what is the maximum number of Open Replicator sessions allowed?

Back 10

256
512
1,024

Front 11

What is the maximum number of data devices that can be put into a thin pool?

Back 11

No limit

Front 12

A customer has a Symmetrix V-Max that is replicated using SRDF/A and is experiencing SRDF/A drops due to intermittent network link loss. Which features can be designed into the existing environment to minimize RPO exposure?

Back 12

SRDF/A Transmit Idle and Delta Set Extension

Front 13

What is a consideration when installing Solutions Enabler on an IBM AIX server?

Back 13

Install path cannot be changed

Front 14

What describes a TimeFinder/Clone session created with the "differential" option?

Back 14

Incremental restore can be planned for

Front 15

Which protection type gives the largest amount of usable capacity?

Back 15

RAID 5 (7+1)

Front 16

With TimeFinder/Snap, how many concurrent snaps are supported on a single mainframe source volume?

Back 16

8

Front 17

How does Transmit Idle help in an SRDF/A deployment?

Back 17

Keeps the session active during a link loss

Front 18

A customer wants to concurrently establish two RAID 1 BCVs with a STD RAID 1 device in a Symmetrix V-Max array.

How many mirror positions will remain for the STD device in this configuration?

Back 18

0

2
3

Front 19

What should be specified in the gatekeeper selection file?

Back 19

Physical device name, one per line

Front 20

A customer is running their applications on SRDF R2 volumes after a disaster. Which step must be taken before an SRDF failback is performed to ensure data integrity?

Back 20

Stop all applications on the R2 devices

Front 21

A SMC user must be able to see all Symmetrix arrays managed by the SMC server but should not be able to make any changes. In addition this user should not be able to view the permissions that have been set for other SMC users.

Which role should be assigned to this user?

Back 21

Monitor

Front 22

A Symmetrix is configured with the two RDF Groups RDFG 1 and RDFG 2 as shown. The SRDF R1 devices used by Application 1 (App 1) and Application 2 (App 2) are in RDFG 1. The SRDF R1 devices used by Application 3 are in RDFG 2.

Application 3 is independent of Applications 1 and 2.

What should be created to enable SRDF/A for these applications?

Back 22

Two device groups, one with all the devices in RDFG 1 and another with all the devices in RDFG 2

Front 23

When implementing thin provisioning what does the term “oversubscription” mean?

Back 23

The capacity of all TDEVs bound to a thin pool is greater than the capacity of all data devices in the pool

Front 24

A customer has several storage arrays in their environment and wants to be able to easily move data between the arrays. The arrays are EMC CLARiiON, HP EVA, IBM DS, and EMC Symmetrix. The storage administrator has recommended Open Replicator for the solution.

On which storage array must Open Replicator be enabled?

Back 24

EMC Symmetrix

Front 25

Which feature is supported by Symmetrix Management Console, but NOT by Solutions Enabler SYMCLI?

Back 25

Storage Templates

Front 26

When creating metaolumes, what is the maximum number of members that a Symmetrix V-Max array supports?

Back 26

255

Front 27

Open Replicator will be used to move data from a Symmetrix V-Max to a CLARiiON array. The CLARiiON has been discovered by the host on which the Open Replicator commands are issued. Which information has to be specified in the Open Replicator device file?

Back 27

symdev=arrayid:device
clardev=arrayid:device

Front 28

Which feature allows multiple hosts to share the same Symmetrix front-end port without conflicting with another host’s devices?

Back 28

Device masking

Front 29

Symmetrix volumes have different purposes: What are SAVE devices configured for?

Back 29

TimeFinder/Snap

Front 30

What is the correct state for the R1-BCV and the R2 prior to issuing a symreplicate start command? R1-BCV----R2

Back 30

Suspended

Split
Established

Front 31

What are the correct SRDF combinations for Virtual Provisioning?

Back 31

SRDF/A support source standard and target thin

SRDF/A support source and target to be only thin devices
SRDF/S support source thin and target standard

Front 32

A customer using Symmetrix Virtual Provisioning in a V-Max reports that the thin pool is full. What is the first step needed to resolve the problem?

Back 32

Add more data devices

Front 33

During an emergency situation, you have to do a restart of the entire system. Which daemon can you perform an immediate stop on instead of waiting to process all incoming sessions before it stops?

Back 33

SYMAPI Server

Front 34

The SAN zones (Zones 3 and 4) shown in the exhibit have been created during an Open Replicator implementation. The control devices in the Symmetrix array are mapped to FA Port 1 and FA Port 2 only. Which Open Replicator operations can be performed?

Back 34

All operations
No operations

Hot Push and Hot Pull only

Front 35

The customer is considering a long-distance replication solution. Due to bandwidth limitations and distance, SRDF/A has been selected. The customer has called the EMC TA to review his RPO.

With a customer-selected minimum cycle time of 30 seconds, what is the worst-case RPO under normal operating conditions?

Back 35

60 seconds

Front 36

In which part of an EMC script would a customer find details about the script's maintenance?

Back 36

Script header

Front 37

What is a benefit of using Open Migrator/LM for a data migration implementation?

Back 37

x?Requires only one reboot to install before the start of migration
Disruption only occurs at the beginning of the migration task
Persists across system reboots without user intervention

Front 38

What is the maximum number of non-differential TimeFinder/Clone copies that can be created from a standard source device that has two RAID 5 BCVs established?

Back 38

12
16

14

Front 39

Which address(s) do you assign to Symmetrix devices to make them available on an FA port?

Back 39

Controller, Target, LUN

Front 40

After acquiring a company 300 hundred miles from their current office the customer has asked EMC to help architect a single-hop application recovery plan. After careful analysis of the workload and available bandwidth, SRDF/AR was selected as the solution.

If the SRDF/AR cycle time is set to 45 minutes, what is the maximum potential data loss?

Back 40

135 minutes
45 minutes
180 minutes

Front 41

Which lock would be acquired when setting Global Symmetrix Attributes on a V-Max array?

Back 41

FBA Director

Static
Device Front End

Front 42

An Oracle database server has its logs and data split between two Symmetrix V-Max arrays at the primary site. Synchronous consistency protection was enabled for the log and the data devices.

What will occur if the link between the Symmetrix V-Max containing the log LUNs and the target Symmetrix V-Max were to fail?

Back 42

R2 data remains consistent because Enginuity Consistency Assist (RDF-ECA) technology ensures data consistency

Front 43

What provides consistency protection in an SRDF/S environment?

Back 43

MSC
GNS
X RDF-ECA
PowerPath

Front 44

A customer has just purchased a V-Max SE and would like to attach several servers and share the disk capacity with prospective growth on each.

Which V-Max feature would be the best solution for this implementation?

Back 44

Virtual Provisioning

Front 45

What would be an advantage of Virtual Provisioning in the V-Max?

Back 45

Reduces the amount of unused allocated storage

Front 46

A customer decides to implement Virtual Provisioning. What would be the most efficient way to use the pool resources?

Back 46

Minimal number of pools

Front 47

When does Open Replicator have an advantage over the SRDF family of replication products?

Back 47

The environment contains a heterogeneous mixture of storage arrays

Front 48

A customer is sharing FA ports between host I/O and Open Replicator I/O and realizes that Open Replicator consumes all bandwidth of the SAN, causing an impact on host performance.

What should be set to prevent the impact to the hosts?

Back 48

Ceiling set to an appropriate percentage

Front 49

SRDF/A has been configured for a pair of Symmetrix arrays 500 km apart. Links have been lost for an extended period of time.

After the links have been restored, what is recommended prior to performing an SRDF resume operation?

Back 49

Set mode to Adaptive Copy Disk

Front 50

A customer wants to assign additional storage from a Symmetrix V-Max array to an open systems host. Which task in the Symmetrix Management Console should be used to accomplish this?

Back 50

Storage Groups Maintenance

Front 51

Which internal EMC tool should be used to quickly identify host compatibility issues with a customer’s current configuration?

Back 51

Host Environment Analysis Tool

Front 52

Which command should be run before making any configuration changes to the Symmetrix to confirm that the changes are permitted?

Back 52

symconfigure verify

Front 53

Your customer has a V-Max array running Enginuity 5874. How are the HBA port flags set?

Back 53

Per initiator

Front 54

When a customer is binding a thin device to a thin pool how many tracks are allocated by default?

Back 54

12

Front 55

Which I/O operation uses the TimeFinder/Snap save device?

Back 55

Write to an unprotected track on the source device
Write to a protected track on the source volume
Read a protected track from the virtual device

Front 56

As part of an SRDF implementation test, SRDF device pairs have been split. What is the expected status of the R1 and R2 devices after the split?

Back 56

R1 Read/Write; R2 Read/Write

Front 57

What is the status of the R1 and R2 devices after performing an SRDF restore operation?

Back 57

R1 Read/Write; R2 Write Disabled

Front 58

Which groups are used for Autoprovisioning in a Symmetrix V-Max?

Back 58

Initiator, Port, Storage

Front 59

You are in the process of implementing Symmetrix Management Console in the configuration shown in the exhibit. Server A can access Server B over an IP network. Server B has access to the Symmetrix array over the SAN.

Which licenses key(s) should you implement on Server B?

Back 59

Base and SYMAPI server keys

Front 60

As shown, one open systems management host is managing an SRDF/A environment with Multi-Session Consistency (MSC) enabled. What happens if this management host is accidentally shut down?

Back 60

MSC cycle switching will stop